Patek Philippe Annual Calendar Chronograph Complications Watch - 5961P-00140. 5 mm platinum case, sapphire crystal back, bezel set with 35 baguette diamonds (~ 3. 48 ct), matt blue dial with 8 diamond hour markers (~ 0. 23 ct), caliber CH 28 520 QA 24H self winding movement with Annual Calendar and Chronograph (sweep seconds hand (chronograph hand) and 60 minute counter, day, date, month in apertures, day night indication), approximately 45 55 hours of power reserve, shiny navy blue alligator strap with square scales, fold